A carbonate coprecipitation synthesis, simple and easily scalable to industrial level, has been successfully applied to produce Sr- and Mg-doped LaGaO3. The thermal evolution shows that the main perovskite phase crystallizes already at 1000 °C. Samples sintered at 1400 °C for 10 h have a relative density of 93% and an electrical conductivity of 7.7 ∙ 10− 2 S cm− 1 at 800 °C, similar to the one reported for solid state synthesis. The presence of small amounts of secondary phases (about 17%) such as LaSrGaO4 and LaSrGa3O7 does not seem to deeply affect the electrical properties of the final material.
Cristiani, C., Zampori, L., Latorrata, S., Pelosato, R., Dotelli, G., Ruffo, R. (2009). Carbonate coprecipitation synthesis of Sr- and Mg-doped LaGaO3. MATERIALS LETTERS, 63(21), 1892-1894 [10.1016/j.matlet.2009.06.007].
Carbonate coprecipitation synthesis of Sr- and Mg-doped LaGaO3
RUFFO, RICCARDO
2009
Abstract
A carbonate coprecipitation synthesis, simple and easily scalable to industrial level, has been successfully applied to produce Sr- and Mg-doped LaGaO3. The thermal evolution shows that the main perovskite phase crystallizes already at 1000 °C. Samples sintered at 1400 °C for 10 h have a relative density of 93% and an electrical conductivity of 7.7 ∙ 10− 2 S cm− 1 at 800 °C, similar to the one reported for solid state synthesis. The presence of small amounts of secondary phases (about 17%) such as LaSrGaO4 and LaSrGa3O7 does not seem to deeply affect the electrical properties of the final material.
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